Fish Passages Gallery August 11, 2009

Discover the magic of a rubber "Twiddlefish!" Parents nimbly twist the top of the wire rod, while toddlers roll it back and forth between their hands. Suspended in moving water, the Twiddlefish springs to life, swimming with realistic motion and speed. During this "ah-ha moment," guests suddenly understand and respect the shape, weight and elasticity of a fishas body. When visitors have the motion down, they can lead their fish through the slots and turning pool of a vertical slot fishway or "fish ladder," like those used to open up additional spawning ground for anadromous fish (fish that live in salt water, but ascend rivers to breed in fresh water).